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Contactless Diagnostics of Turbine Blade Vibration and Damage
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SYSNO ASEP 0363222 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Contactless Diagnostics of Turbine Blade Vibration and Damage Tvůrce(i) Procházka, Pavel (UT-L) RID, ORCID
Vaněk, František (UT-L) RIDZdroj.dok. Journal of Physics: Conference Series. - : Institute of Physics Publishing - ISSN 1742-6588
Roč. 305, č. 1 (2011), s. 1-11Poč.str. 11 s. Akce International Conference on Damage Assessment of Structures (DAMAS 2011) /9./ Datum konání 11.07.2011-13.07.2011 Místo konání Oxford Země GB - Velká Británie Typ akce WRD Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova steam turbine ; blade damage assessment ; tip-timing method Vědní obor RIV JL - Únava materiálu a lomová mechanika CEZ AV0Z20760514 - UT-L (2005-2011) UT WOS 000309681100109 DOI 10.1088/1742-6596/305/1/012116 Anotace The tip-timing method based on the evaluation of time differences of blade passages in different rotor revolutions has been modified and improved to provide more precise and reliable results. A new approach to the analysis of the amplitude and time differences of impulse signals generated by a blade passage has been applied. Amplitudes and frequencies of vibrations and static position of blades ascertained by the diagnostic process are used to establish the state of blade damage. A contactless diagnostic system VDS-UT based on magneto-resistive sensors was developed in the Institute of Thermomechanics Academy of Sciences of the Czech Republic. The system provides on-line monitoring of vibration amplitudes and frequencies of all blades and notification of possible blade damage.Evaluation of the axial and circumferential components of the deflections by measuring the amplitude of blade impulse signals results in an overall improvement of the method. Pracoviště Ústav termomechaniky Kontakt Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Rok sběru 2012 Elektronická adresa http://iopscience.iop.org/1742-6596/305/1/012116
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